CN214926067U

CN214926067U - Granulation device

Info

Publication number: CN214926067U
Application number: CN202023343960.8U
Authority: CN
Inventors: 覃碧勋; 李卫
Original assignee: Puca Plastic Technology Co ltd
Current assignee: Puca Plastic Technology Co ltd
Priority date: 2020-12-31
Filing date: 2020-12-31
Publication date: 2021-11-30
Anticipated expiration: 2030-12-31

Abstract

The utility model discloses a granulation device, which comprises an extrusion device, a cooling device, a drying device and a granulating device which are arranged in sequence, the cooling device comprises a cooling tank for containing cooling liquid and a plurality of guide wheels which are arranged in the cooling tank at intervals along the depth direction of the cooling tank, the guide wheels can rotate relative to the cooling box, the starting end of the material strip which is formed by the extrusion device through hot molding sequentially winds the guide wheels and the drying device and then is connected with the granulating device, during the process of drawing the material strip by the granulating device, the material strip is wound by a plurality of guide wheels to be fully contacted with the cooling liquid, and the drying device is used for drying the surface of the cooled material strip, and the material strip with the surface subjected to drying treatment is cut into granular master batches by the granulating device. The equipment has simple structure, reasonable layout, high efficiency, economy and practicability.

Description

Granulation device

Technical Field

The utility model relates to a plastics manufacture equipment especially relates to a granulation equipment.

Background

With the continuous development of the technology, the plastic master batch is widely applied to the industries such as the clothing industry, the building industry, the electronic communication industry, the chemical industry and the like and the daily life of people, and is used for manufacturing various plastic bags, barrels, basins, toys, furniture, stationery and other articles of daily use and various plastic products. For the production of plastic master batches, plastic raw materials and various auxiliary agents are generally mixed, and then are melt-extruded into strands, and the strands are cut into granules with certain shapes, which is also called granulation operation, so that granulation equipment for preparing master batches is involved.

Most of the existing granulating equipment is to pull the thermoplastic formed material strips through a pulling device so that the material strips pass through a cooling water tank or a wind box for cooling, but for the granulating operation of thermoplastic elastomers, the materials have relatively low hardness, relatively good toughness, relatively large elasticity and relatively low thermal deformation temperature, and if the materials are not cooled sufficiently or thoroughly during extrusion, a granulating device is difficult to cut the materials, so that the phenomenon of adhesion of a string like a pearl necklace is often generated, and the plastic particles cannot be formed one by one. The existing solution is that the material strips are fully cooled by a doubled cooling process through lengthening the water tanks or connecting a plurality of water tanks in series, but the lengthening of the water tanks or the connection of a plurality of water tanks in series is greatly limited by a production field, and a longer production workshop is needed.

Therefore, there is a need for a granulation apparatus with simple structure, reasonable layout, high efficiency and economical and practical use to overcome the above problems.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a simple structure, rationally distributed, efficient and economical and practical's granulation equipment.

In order to achieve the purpose, the utility model discloses a granulation device, which comprises an extrusion device, a cooling device, a drying device and a granulating device which are arranged in sequence, the cooling device comprises a cooling tank for containing cooling liquid and a plurality of guide wheels which are arranged in the cooling tank at intervals along the depth direction of the cooling tank, the guide wheels can rotate relative to the cooling box, the starting end of the material strip which is formed by the extrusion device through hot molding sequentially winds the guide wheels and the drying device and then is connected with the granulating device, during the process of drawing the material strip by the granulating device, the material strip is wound by a plurality of guide wheels to be fully contacted with the cooling liquid, and the drying device is used for drying the surface of the cooled material strip, and the material strip with the surface subjected to drying treatment is cut into granular master batches by the granulating device.

Compared with the prior art, the utility model discloses a granulation equipment shared space is less, need not to increase the length of cooler bin, also need not a plurality of cooler bins and establish ties, but through add a plurality of leading wheels along the depth direction interval arrangement of cooler bin in the cooler bin, makes the material strip spiral in the coolant liquid around a plurality of leading wheels to prolong the contact time with the coolant liquid, realizes abundant and thorough cooling, and then improves the yields of the plastics master batch that follow-up eager grain formed; and, the material strip is under the effect of the tractive power of cutting the grain device, around through rotatable leading wheel, and frictional force is little, and the resistance that receives is less to need not very big traction force, make the material strip can not be very tight, can not tensile deformation, and then improve subsequent eager grain efficiency of cutting, effectively guarantee the yields of master batch, this equipment structure is simple, rationally distributed, high-efficient and economical and practical.

Preferably, the cooling liquid is water which can be recycled in the cooling tank.

Preferably, the cooling liquid is a liquid antistatic agent.

Preferably, a liquid inlet and a liquid outlet for recycling the cooling liquid are arranged in the cooling tank.

Preferably, the guide wheels provided at opposite vertex-side ends of the cooling tank are located at positions lower than or flush with the liquid level of the cooling liquid.

Preferably, the guide wheels are further arranged in two rows at intervals along the length direction of the cooling box, the intervals between the guide wheels in the same row may be different, and the intervals between the guide wheels in different rows may be different.

Preferably, the guide wheels in the same column are arranged in a straight line, an oblique line or a broken line.

Preferably, the guide wheel has a certain length, the surface of the guide wheel is a smooth surface, and the guide wheel can be rotatably erected in the cooling box along the width direction of the cooling box.

Preferably, the utility model discloses a granulation equipment still includes directional wheel, directional wheel is located the back upper place of cooler bin, just directional wheel with cut grain device's traction wheel and be the straight line and arrange.

Preferably, the granulation apparatus of the present invention further comprises a pressure connection wheel, the pressure connection wheel is located above the orientation wheel, and a through connection gap is provided between the pressure connection wheel and the orientation wheel, at least one of the pressure connection wheel and the orientation wheel can rotate relative to the other, so that part of the cooling liquid passing through the surface of the material strip between the pressure connection wheel and the orientation wheel is scraped down into the cooling box.

Drawings

Fig. 1 is a schematic structural diagram of the granulation apparatus of the present invention.

Fig. 2 is a schematic structural view of the cooling device of the present invention, in which the guide wheels are arranged in a diagonal line.

Detailed Description

In order to explain technical contents, structural features, and objects and effects of the present invention in detail, the following description is given in conjunction with the embodiments and the accompanying drawings.

Referring to fig. 1, the present invention discloses a granulation apparatus 100, which is suitable for granulation of master batch 200, especially suitable for granulation of thermoplastic elastomers, such as TPE, TPU, TPV, EVA, POE, and soft PVC. Specifically, the granulation apparatus 100 of the present invention includes an extrusion device 10, a cooling device 20, a drying device 30 and a granulation device 40 arranged in sequence, wherein the cooling device 20 includes a cooling box 21 for containing a cooling liquid and a plurality of guide wheels 22 arranged in the cooling box 21 at intervals along the depth direction of the cooling box 21, and the guide wheels 22 can rotate relative to the cooling box 21, and the starting end of the material strip 300 formed by the thermoplastic molding of the extrusion device 10 is sequentially wound around the plurality of guide wheels 22 and the drying device 30 and then connected with the granulation device 40; in the process of drawing the strand 300 by the dicing device 40, the strand 300 passes around the plurality of guide wheels 22 and sufficiently contacts with the cooling liquid, the drying device 30 performs drying treatment on the surface of the cooled strand 300, and the strand 300 subjected to the drying treatment on the surface is cut into the granular master batches 200 by the dicing device 40. Wherein, the utility model discloses a granulation equipment 100 still includes material collecting device 50, and material collecting device 50 locates the output of cutting grain device 40 for to the collection of the master batch 200 that the cutting formed. More specifically:

in the present embodiment, the cooling liquid is water that can be recycled in the cooling tank 21, that is, the cooling is performed by the recycled water, which is low in cost and high in efficiency. A liquid inlet 211 and a liquid outlet 212 are disposed in the cooling tank 21 for circulating the cooling liquid, and the cooling liquid in the cooling tank 21 can be communicated with an external circulating device (not shown in the figure) through the liquid inlet 211 and the liquid outlet 212, so as to ensure the cleanliness and the cooling temperature of the cooling liquid in the cooling tank 21. In order to achieve a better cooling effect, the guide wheel 22 provided at the opposite tip end of the cooling box 21 is located at a position lower than or flush with the liquid level of the cooling liquid in the cooling box 21. For ease of understanding, the level of the coolant in the cooling tank 21 is shown by a dashed line L in fig. 1. Certainly, in other embodiments, the cooling liquid may also be a mixture of water and a water-soluble antistatic agent or a liquid-like antistatic agent, so that the strip 300 can be cooled, and before cutting, the surface of the strip 300 is subjected to antistatic treatment, so that static possibly generated on the surface of the cut plastic master batch is effectively prevented, a subsequent manual static elimination process is omitted, the production time of the master batch is shortened, and the production efficiency is improved.

Specifically, the surface of the guide wheel 22 is smooth, and the guide wheel 22 has a certain length, which is rotatably mounted in the cooling box 21 in the width direction of the cooling box 21. The guide wheel 22 may be connected to a rotary driver disposed outside the cooling box 21 to rotate, or may be fixed in the cooling box 21 through a rotating shaft to rotate along with the movement of the material strip 300 during the drawing process.

Specifically, the guide wheels 22 are further arranged in two rows at intervals along the length direction of the cooling box 21, the intervals between the guide wheels 22 in the same row may be different, and the intervals between the guide wheels 22 in different rows may also be different. As shown in fig. 1, the guide wheels 22 in the same row are arranged in a straight line, as shown in fig. 2, the guide wheels 22 in the same row are arranged in an oblique line, and of course, the guide wheels 22 in the same row may also be arranged in a broken line.

Specifically, the granulation apparatus 100 of the present invention further includes an orientation wheel 60, wherein the orientation wheel 60 is disposed at the upper rear portion of the cooling box 21 for guiding and limiting the leaving direction of the material strip 300 relative to the cooling box 21. Wherein, the orientation wheel 60 and the traction wheel 41 of the pelletizing device 40 are arranged in a straight line, so that the traction wheel 41 of the pelletizing device 40 can drive the material strip 300 to move linearly, thereby facilitating the material cutting operation of the cutting wheel 42 of the pelletizing device 40. For ease of understanding, as shown in fig. 1, the cooling box 21 and the dicing device 40 hide the side plates on the respective sides.

Further, the utility model discloses a granulation equipment 100 still includes crimping wheel 70, crimping wheel 70 locates the top of directional wheel 60, and with directional wheel 60 between have a cross-under clearance, at least one of crimping wheel 70 and directional wheel 60 can rotate another relatively to in will passing the partial coolant liquid on the material strip 300 surface between the two and scraping to the cooler bin 21, the drying operation of the follow-up drying device 30 of being convenient for improves drying efficiency, and collects the coolant liquid as far as possible and recycle, effective reduce cost.

The operation principle of the granulation apparatus 100 of the present invention is described with reference to fig. 1 and 2:

firstly, after the equipment is started, the extrusion device 10 mixes and melts the plastic raw material and various additives poured into the extrusion device, and then the plastic raw material and various additives are extruded into a strip 300 from the discharge port 11, under the action of the traction force of the traction wheel 41 of the granulating device 40, the strip 300 is alternately wound between the guide wheels 22 in different rows from the bottom side end of the cooling box 21 to the top side end thereof, and then the strip 300 is upwards coiled to pass through the penetrating and connecting gap between the pressing wheel 70 and the orientation wheel 60, so that most of the cooling liquid on the surface of the fully cooled strip 300 is scraped to the cooling box 21, then the drying device 30 further dries the strip 300, the cutting wheel 42 of the granulating device 40 cuts the fully dried strip 300 on the traction wheel 41 opposite to the cutting wheel, and the master batch 200 meeting the requirement is formed, and the cut master batch 200 is collected in the material receiving device 50.

Compared with the prior art, the utility model discloses a granulation equipment 100 occupies less space, need not to increase the length of cooler 21, also need not concatenating of a plurality of cooler 21, but through add a plurality of leading wheels 22 along the depth direction interval arrangement of cooler 21 in cooler 21, make material strip 300 spiral in the coolant liquid around a plurality of leading wheels 22, thereby prolong the contact time with the coolant liquid, realize abundant cooling, and then improve the yields of the master batch 200 that follow-up eager grain formed; and, material strip 300 is under the effect of the tractive power of cutting grain device 40, around through pivoted leading wheel 22, and frictional force is little, makes the resistance that receives less, thereby need not very big traction force, makes material strip 300 can not be very tight, can not tensile deformation, also can not twine on the traction wheel 41 of cutting grain device 40 when getting into cutting grain device 40, thereby cutting position department between cutting wheel 42 and the traction wheel 41 of cutting grain device 40 is cut in the entering that can be smooth, and then improves subsequent eager grain efficiency, effectively guarantees the yields of master batch, the utility model discloses a granulation equipment 100 simple structure, rationally distributed, high-efficient and economical and practical.

The above disclosure is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the scope of the invention, therefore, the invention is not limited thereto.

Claims

1. A granulation device is characterized by comprising an extrusion device, a cooling device, a drying device and a granulating device which are arranged in sequence, the cooling device comprises a cooling tank for containing cooling liquid and a plurality of guide wheels which are arranged in the cooling tank at intervals along the depth direction of the cooling tank, the guide wheels can rotate relative to the cooling box, the starting end of the material strip which is formed by the extrusion device through hot molding sequentially winds the guide wheels and the drying device and then is connected with the granulating device, during the process of drawing the material strip by the granulating device, the material strip is wound by a plurality of guide wheels to be fully contacted with the cooling liquid, and the drying device is used for drying the surface of the cooled material strip, and the material strip with the surface subjected to drying treatment is cut into granular master batches by the granulating device.

2. Granulation apparatus as claimed in claim 1, characterized in that said cooling liquid is water which can be recycled in said cooling tank.

3. Granulation device as claimed in claim 1, characterized in that the cooling liquid is an antistatic agent in liquid form.

4. Granulation apparatus as claimed in any one of claims 1 to 3, wherein a liquid inlet and a liquid outlet for recycling of said cooling liquid are provided in said cooling tank.

5. The granulation apparatus as claimed in claim 1, wherein the guide wheels provided at opposite vertex ends of the cooling tank are located at a position lower than or flush with a liquid level of the cooling liquid.

6. The granulation apparatus as claimed in claim 1, wherein the plurality of guide wheels are further arranged at intervals in two rows along the length direction of the cooling tank, and the intervals between the guide wheels in the same row may be different and the intervals between the guide wheels in different rows may be different.

7. Granulation device as claimed in claim 6, characterized in that the guide wheels in the same row are arranged in a straight line, in a diagonal line or in a broken line.

8. The granulation apparatus as claimed in claim 6, wherein said guide wheel has a length and a smooth surface, and is rotatably mounted in said cooling tank in a width direction of said cooling tank.

9. The granulation apparatus as claimed in claim 1, further comprising an orientation wheel disposed at the rear upper side of the cooling tank, wherein the orientation wheel is arranged in a straight line with a traction wheel of the granulation device.

10. The granulation apparatus as claimed in claim 9, further comprising a pressure-connecting wheel disposed above the orientation wheel with a gap therebetween, wherein at least one of the pressure-connecting wheel and the orientation wheel is rotatable relative to the other to scrape a portion of the cooling liquid passing through the surface of the strand therebetween into the cooling tank.